North Wales is the northernmost unofficial region of Wales. Retail, transport and educational infrastructure are centred on Wrexham, Rhyl, Colwyn Bay, Llandudno and Bangor. It is bordered to the south by the counties of Ceredigion and Powys in Mid Wales and to the east by the counties of Shropshire in the West Midlands and Cheshire in North West England. North Wales is divided into three traditional regions ; Upper Gwynedd (or Gwynedd above the Conwy defined as the area north of the River Dyfi and west of the River Conwy); Lower Gwynedd (or Gwynedd below the Conwy also known as the Perfeddwlad and defined as the region east of the River Conwy and west of the River Dee) and Ynys Môn (or Anglesey), a large island off the north coast.

The region is steeped in history and was for almost a millennium known as the Kingdom of Gwynedd. The mountainous stronghold of Snowdonia formed the nucleus of that realm and would become the last redoubt of independent Wales — only overcome in 1283. To this day it remains a stronghold of the Welsh language and a centre for Welsh national and cultural identity.

North Wales has a distinct regional identity. Its dialect of the Welsh language differs from that of other regions such as South Wales in some ways; for example llefrith is used in most of the North instead of llaeth for "milk"; a simple sentence such as go upstairs now might be Dos i fyny'r grisiau rŵan in North Wales, where it might be Cer lan y stâr nawr in South Wales. Colloquially, a person from North Wales (especially one who speaks with this dialect or accent) is known as a North Walian, or a Gog (from the Welsh gogledd, meaning "north"). Areas close to the border with Cheshire can have Scouse accents, and along the coast Manchester accents are common.